Secure-File-Manager VS android

It is cool, I suggest it. Another similar application is Secure-File-Manager but I am not using it 'cause it's still in Alpha/Beta.

https://github.com/Secure-File-Manager/Secure-File-Manager says, in bold, you should not use this app with important files

Or, go the FOSS way and try this file manager.

Secure File Manager Beta (version 0.1.9-beta): File manager for keeping your files in safe

Secure File Manager (Github)

you can try Secure File manager, if you’re looking for a vault.

When you only want to access the files you could wait for the freemium cryptomator app for android: https://github.com/cryptomator/android/issues/428

You can install cryptomator by adding the following url in obtainium:https://github.com/cryptomator/android/releases/

Such apps exist. Essentially they require a license key before accesing. For example, Cryptomator (github) and Threema (github) .

Cryptomator (version 2772): Put a lock on your cloud: Take the security of your data into your own hands

Ah, I see what you're asking. They don't have any free trial features, especially for the Android app. You can try to compile the apk yourself though. I don't believe you need the license key if you compile the code. https://github.com/cryptomator/android

It sounds like you are mixing some terms up. Open Source Software does not mean free of charge. The source code is open, modifiable (and usually instructions are given to build it). However, there are some licenses for this software. Cryptomator's Android code is here: https://github.com/cryptomator/android and the license, what to do with this software is here (You obviously can't just stick a different logo on top and sell it as your product).

You mean this? https://github.com/cryptomator/android

Its tracked in Github

Yep, also want to point out the app is actually open source, the only reason it's paid on Google Play is so that you can support the devs: https://github.com/cryptomator/android